Fair Values of Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Financial assets:
Cash, due from banks and federal funds sold	$ 44,221	$ 2,692
Interest bearing deposits with financial institutions	84,286	48,257
FHLBC and FRB stock	11,202	14,050
Bank-owned life insurance	54,203	52,595
Financial liabilities:
Noninterest bearing deposits	379,451	361,963
Other short-term borrowings	100,000
Junior subordinated debentures	58,378	58,378
Level 1
Financial assets:
Cash, due from banks and federal funds sold	44,221	2,692
Interest bearing deposits with financial institutions	84,286	48,257
Securities available-for-sale	1,507	1,524
Financial liabilities:
Noninterest bearing deposits	379,451	361,963
Junior subordinated debentures	22,725	13,172
Borrowing interest payable	6,946	4,006
Level 2
Financial assets:
Securities available-for-sale	568,290	295,928
FHLBC and FRB stock	11,202
Bank-owned life insurance	54,203	52,595
Loans held for sale	9,571	12,806
Accrued interest receivable	5,252	5,708
Financial liabilities:
Interest bearing deposits	1,347,603	1,382,663
Securities sold under repurchase agreements	17,875	901
Other short-term borrowings	100,000
Junior subordinated debentures	15,583	9,031
Subordinated debt	28,206	24,532
Notes payable and other borrowings	302	260
Borrowing interest payable	4,794	2,809
Deposit interest payable	1,006	1,718
Level 3
Financial assets:
Securities available-for-sale	10,089	10,112
FHLBC and FRB stock		14,050
Loans, net	1,118,711	1,352,335
Carrying Amount
Financial assets:
Cash, due from banks and federal funds sold	44,221	2,692
Interest bearing deposits with financial institutions	84,286	48,257
Securities available-for-sale	579,886	307,564
FHLBC and FRB stock	11,202	14,050
Bank-owned life insurance	54,203	52,595
Loans held for sale	9,571	12,806
Loans, net	1,111,453	1,316,988
Accrued interest receivable	5,252	5,708
Financial liabilities:
Noninterest bearing deposits	379,451	361,963
Interest bearing deposits	1,337,768	1,378,818
Securities sold under repurchase agreements	17,875	901
Other short-term borrowings	100,000
Junior subordinated debentures	58,378	58,378
Subordinated debt	45,000	45,000
Notes payable and other borrowings	500	500
Borrowing interest payable	11,740	6,815
Deposit interest payable	1,006	1,718
Fair Value
Financial assets:
Cash, due from banks and federal funds sold	44,221	2,692
Interest bearing deposits with financial institutions	84,286	48,257
Securities available-for-sale	579,886	307,564
FHLBC and FRB stock	11,202	14,050
Bank-owned life insurance	54,203	52,595
Loans held for sale	9,571	12,806
Loans, net	1,118,711	1,352,335
Accrued interest receivable	5,252	5,708
Financial liabilities:
Noninterest bearing deposits	379,451	361,963
Interest bearing deposits	1,347,603	1,382,663
Securities sold under repurchase agreements	17,875	901
Other short-term borrowings	100,000
Junior subordinated debentures	38,308	22,203
Subordinated debt	28,206	24,532
Notes payable and other borrowings	302	260
Borrowing interest payable	11,740	6,815
Deposit interest payable	$ 1,006	$ 1,718

Represents the fair value of interest payable related to deposits at the balance sheet date.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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The carrying amount of a life insurance policy on an officer, executive or employee for which the reporting entity (a bank) is entitled to proceeds from the policy upon death of the insured or surrender of the insurance policy.

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For banks and other depository institutions: Includes cash on hand (currency and coin), cash items in process of collection, noninterest bearing deposits due from other financial institutions (including corporate credit unions), and noninterest bearing balances with the Federal Reserve Banks, Federal Home Loan Banks and central banks.

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Amount of subordinated debt obligations (also known as subordinated loan, subordinated bond, subordinated debenture or junior debt) which has a priority ranking after other debts in a dissolution, measured at fair value.

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Amount of Federal Home Loan Bank (FHLB) and Federal Reserve Bank stock.

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The aggregate of all domestic and foreign interest-bearing deposit liabilities.

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For banks and other depository institutions (including Federal Reserve Banks, if applicable): Interest-bearing deposits in other financial institutions for relatively short periods of time including, for example, certificates of deposits, which are presented separately from cash on the balance sheet.

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Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid.

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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Including the current and noncurrent portions, the carrying value of junior subordinated long-term debt owed to unconsolidated subsidiary trusts as of the balance sheet date. Such debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets and was initially scheduled to be repaid after one year or beyond the normal operating cycle if longer.

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Sum of the carrying amounts at the balance sheet date of short-term borrowings not otherwise specified in the taxonomy having initial terms less than one year or the normal operating cycle, if longer.

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